./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Arbiter.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Arbiter.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 daa141bceaab1dce596dec41c05d7428109f60bb62645942d09e8fdb56f4587f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 06:11:08,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 06:11:08,896 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-11 06:11:08,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 06:11:08,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 06:11:08,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 06:11:08,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 06:11:08,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 06:11:08,941 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 06:11:08,942 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 06:11:08,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 06:11:08,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 06:11:08,943 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 06:11:08,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 06:11:08,944 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 06:11:08,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 06:11:08,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 06:11:08,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 06:11:08,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 06:11:08,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 06:11:08,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 06:11:08,951 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 06:11:08,951 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 06:11:08,951 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 06:11:08,952 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 06:11:08,952 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 06:11:08,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 06:11:08,953 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 06:11:08,953 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 06:11:08,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 06:11:08,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 06:11:08,954 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 06:11:08,954 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 06:11:08,954 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 06:11:08,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 06:11:08,955 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 06:11:08,955 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 06:11:08,955 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 06:11:08,956 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 06:11:08,956 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> daa141bceaab1dce596dec41c05d7428109f60bb62645942d09e8fdb56f4587f [2024-10-11 06:11:09,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 06:11:09,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 06:11:09,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 06:11:09,359 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 06:11:09,360 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 06:11:09,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Arbiter.c [2024-10-11 06:11:10,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 06:11:11,228 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 06:11:11,229 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Arbiter.c [2024-10-11 06:11:11,250 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/953ce6bb2/40fbea621bb14d259b1ce4ae64f585f3/FLAG28ce21ec6 [2024-10-11 06:11:11,278 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/953ce6bb2/40fbea621bb14d259b1ce4ae64f585f3 [2024-10-11 06:11:11,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 06:11:11,284 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 06:11:11,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 06:11:11,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 06:11:11,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 06:11:11,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:11:11" (1/1) ... [2024-10-11 06:11:11,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1886cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:11, skipping insertion in model container [2024-10-11 06:11:11,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:11:11" (1/1) ... [2024-10-11 06:11:11,356 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 06:11:11,620 WARN L248 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_Arbiter.c[1249,1262] [2024-10-11 06:11:11,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 06:11:11,920 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 06:11:11,932 WARN L248 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_Arbiter.c[1249,1262] [2024-10-11 06:11:12,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 06:11:12,080 INFO L204 MainTranslator]: Completed translation [2024-10-11 06:11:12,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12 WrapperNode [2024-10-11 06:11:12,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 06:11:12,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 06:11:12,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 06:11:12,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 06:11:12,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12" (1/1) ... [2024-10-11 06:11:12,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12" (1/1) ... [2024-10-11 06:11:12,298 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1673 [2024-10-11 06:11:12,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 06:11:12,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 06:11:12,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 06:11:12,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 06:11:12,315 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12" (1/1) ... [2024-10-11 06:11:12,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12" (1/1) ... [2024-10-11 06:11:12,342 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12" (1/1) ... [2024-10-11 06:11:12,496 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]. [2024-10-11 06:11:12,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12" (1/1) ... [2024-10-11 06:11:12,501 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12" (1/1) ... [2024-10-11 06:11:12,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12" (1/1) ... [2024-10-11 06:11:12,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12" (1/1) ... [2024-10-11 06:11:12,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12" (1/1) ... [2024-10-11 06:11:12,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12" (1/1) ... [2024-10-11 06:11:12,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 06:11:12,683 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 06:11:12,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 06:11:12,684 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 06:11:12,685 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12" (1/1) ... [2024-10-11 06:11:12,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 06:11:12,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:11:12,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 06:11:12,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 06:11:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 06:11:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 06:11:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 06:11:12,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 06:11:13,116 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 06:11:13,119 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 06:11:14,986 INFO L? ?]: Removed 1116 outVars from TransFormulas that were not future-live. [2024-10-11 06:11:14,986 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 06:11:15,063 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 06:11:15,064 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 06:11:15,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:11:15 BoogieIcfgContainer [2024-10-11 06:11:15,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 06:11:15,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 06:11:15,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 06:11:15,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 06:11:15,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:11:11" (1/3) ... [2024-10-11 06:11:15,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df9231a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:11:15, skipping insertion in model container [2024-10-11 06:11:15,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:11:12" (2/3) ... [2024-10-11 06:11:15,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df9231a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:11:15, skipping insertion in model container [2024-10-11 06:11:15,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:11:15" (3/3) ... [2024-10-11 06:11:15,075 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Arbiter.c [2024-10-11 06:11:15,095 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 06:11:15,096 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 06:11:15,189 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 06:11:15,202 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;@6edb7307, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 06:11:15,202 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 06:11:15,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 261 states have (on average 1.5019157088122606) internal successors, (392), 262 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-11 06:11:15,222 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:15,222 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:11:15,223 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:15,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:15,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2069863838, now seen corresponding path program 1 times [2024-10-11 06:11:15,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:15,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459938451] [2024-10-11 06:11:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:15,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:16,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:16,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459938451] [2024-10-11 06:11:16,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459938451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:16,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:16,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:11:16,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79144167] [2024-10-11 06:11:16,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:16,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 06:11:16,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:16,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 06:11:16,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:11:16,351 INFO L87 Difference]: Start difference. First operand has 263 states, 261 states have (on average 1.5019157088122606) internal successors, (392), 262 states have internal predecessors, (392), 0 states have call successors, (0), 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 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:16,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:16,446 INFO L93 Difference]: Finished difference Result 462 states and 690 transitions. [2024-10-11 06:11:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 06:11:16,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2024-10-11 06:11:16,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:16,468 INFO L225 Difference]: With dead ends: 462 [2024-10-11 06:11:16,468 INFO L226 Difference]: Without dead ends: 264 [2024-10-11 06:11:16,473 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 [2024-10-11 06:11:16,479 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 0 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:16,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1156 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:11:16,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-10-11 06:11:16,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-10-11 06:11:16,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.4904942965779469) internal successors, (392), 263 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:16,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 392 transitions. [2024-10-11 06:11:16,549 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 392 transitions. Word has length 62 [2024-10-11 06:11:16,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:16,549 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 392 transitions. [2024-10-11 06:11:16,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:16,550 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 392 transitions. [2024-10-11 06:11:16,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 06:11:16,556 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:16,556 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:11:16,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 06:11:16,556 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:16,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:16,557 INFO L85 PathProgramCache]: Analyzing trace with hash 260425992, now seen corresponding path program 1 times [2024-10-11 06:11:16,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:16,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126710377] [2024-10-11 06:11:16,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:16,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:16,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:16,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126710377] [2024-10-11 06:11:16,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126710377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:16,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:16,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:11:16,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735597660] [2024-10-11 06:11:16,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:16,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 06:11:16,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:16,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 06:11:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:11:16,846 INFO L87 Difference]: Start difference. First operand 264 states and 392 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:16,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:16,904 INFO L93 Difference]: Finished difference Result 465 states and 690 transitions. [2024-10-11 06:11:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 06:11:16,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-11 06:11:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:16,906 INFO L225 Difference]: With dead ends: 465 [2024-10-11 06:11:16,906 INFO L226 Difference]: Without dead ends: 266 [2024-10-11 06:11:16,907 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 [2024-10-11 06:11:16,909 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 0 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:16,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1153 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:11:16,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-10-11 06:11:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-10-11 06:11:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.4867924528301886) internal successors, (394), 265 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 394 transitions. [2024-10-11 06:11:16,922 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 394 transitions. Word has length 63 [2024-10-11 06:11:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:16,923 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 394 transitions. [2024-10-11 06:11:16,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 394 transitions. [2024-10-11 06:11:16,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-11 06:11:16,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:16,940 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:11:16,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 06:11:16,941 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:16,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:16,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1614694405, now seen corresponding path program 1 times [2024-10-11 06:11:16,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:16,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532313613] [2024-10-11 06:11:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:16,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:17,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532313613] [2024-10-11 06:11:17,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532313613] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:17,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:17,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:11:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71813044] [2024-10-11 06:11:17,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:17,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:11:17,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:11:17,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:11:17,661 INFO L87 Difference]: Start difference. First operand 266 states and 394 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:17,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:17,800 INFO L93 Difference]: Finished difference Result 472 states and 699 transitions. [2024-10-11 06:11:17,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:11:17,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-10-11 06:11:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:17,806 INFO L225 Difference]: With dead ends: 472 [2024-10-11 06:11:17,808 INFO L226 Difference]: Without dead ends: 271 [2024-10-11 06:11:17,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:11:17,813 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 1 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:17,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2281 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:11:17,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-10-11 06:11:17,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2024-10-11 06:11:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.4814814814814814) internal successors, (400), 270 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 400 transitions. [2024-10-11 06:11:17,829 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 400 transitions. Word has length 64 [2024-10-11 06:11:17,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:17,830 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 400 transitions. [2024-10-11 06:11:17,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 400 transitions. [2024-10-11 06:11:17,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-11 06:11:17,832 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:17,832 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:11:17,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 06:11:17,833 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:17,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:17,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1756829002, now seen corresponding path program 1 times [2024-10-11 06:11:17,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:17,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683703300] [2024-10-11 06:11:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:17,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:18,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:18,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683703300] [2024-10-11 06:11:18,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683703300] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:18,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:18,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:11:18,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130694946] [2024-10-11 06:11:18,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:18,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:11:18,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:18,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:11:18,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:11:18,516 INFO L87 Difference]: Start difference. First operand 271 states and 400 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:18,607 INFO L93 Difference]: Finished difference Result 479 states and 706 transitions. [2024-10-11 06:11:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:11:18,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-11 06:11:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:18,610 INFO L225 Difference]: With dead ends: 479 [2024-10-11 06:11:18,610 INFO L226 Difference]: Without dead ends: 273 [2024-10-11 06:11:18,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:11:18,612 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 341 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:18,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1515 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:11:18,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-10-11 06:11:18,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2024-10-11 06:11:18,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.4779411764705883) internal successors, (402), 272 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 402 transitions. [2024-10-11 06:11:18,621 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 402 transitions. Word has length 65 [2024-10-11 06:11:18,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:18,622 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 402 transitions. [2024-10-11 06:11:18,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:18,623 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 402 transitions. [2024-10-11 06:11:18,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-11 06:11:18,625 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:18,625 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:11:18,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 06:11:18,625 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:18,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:18,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1901999121, now seen corresponding path program 1 times [2024-10-11 06:11:18,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:18,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731367203] [2024-10-11 06:11:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:18,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:19,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:19,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:19,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731367203] [2024-10-11 06:11:19,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731367203] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:19,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:19,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:11:19,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906565622] [2024-10-11 06:11:19,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:19,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:11:19,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:19,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:11:19,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:11:19,047 INFO L87 Difference]: Start difference. First operand 273 states and 402 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:19,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:19,135 INFO L93 Difference]: Finished difference Result 502 states and 738 transitions. [2024-10-11 06:11:19,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:11:19,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-11 06:11:19,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:19,137 INFO L225 Difference]: With dead ends: 502 [2024-10-11 06:11:19,137 INFO L226 Difference]: Without dead ends: 294 [2024-10-11 06:11:19,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:11:19,139 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 13 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:19,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2280 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:11:19,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-10-11 06:11:19,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2024-10-11 06:11:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.4675767918088738) internal successors, (430), 293 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:19,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 430 transitions. [2024-10-11 06:11:19,149 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 430 transitions. Word has length 65 [2024-10-11 06:11:19,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:19,150 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 430 transitions. [2024-10-11 06:11:19,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:19,150 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 430 transitions. [2024-10-11 06:11:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 06:11:19,152 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:19,152 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:11:19,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 06:11:19,155 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:19,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:19,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2137086156, now seen corresponding path program 1 times [2024-10-11 06:11:19,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:19,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554300633] [2024-10-11 06:11:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:19,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:19,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:19,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554300633] [2024-10-11 06:11:19,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554300633] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:19,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:19,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:11:19,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81309991] [2024-10-11 06:11:19,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:19,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:11:19,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:19,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:11:19,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:11:19,545 INFO L87 Difference]: Start difference. First operand 294 states and 430 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:19,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:19,955 INFO L93 Difference]: Finished difference Result 662 states and 962 transitions. [2024-10-11 06:11:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:11:19,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-11 06:11:19,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:19,958 INFO L225 Difference]: With dead ends: 662 [2024-10-11 06:11:19,959 INFO L226 Difference]: Without dead ends: 433 [2024-10-11 06:11:19,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:11:19,960 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 691 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:19,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1330 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 06:11:19,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-10-11 06:11:19,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 337. [2024-10-11 06:11:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.4642857142857142) internal successors, (492), 336 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:19,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 492 transitions. [2024-10-11 06:11:19,975 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 492 transitions. Word has length 66 [2024-10-11 06:11:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:19,976 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 492 transitions. [2024-10-11 06:11:19,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 492 transitions. [2024-10-11 06:11:19,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 06:11:19,980 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:19,981 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:11:19,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 06:11:19,981 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:19,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:19,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1519611553, now seen corresponding path program 1 times [2024-10-11 06:11:19,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:19,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089375343] [2024-10-11 06:11:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:19,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:20,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:20,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089375343] [2024-10-11 06:11:20,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089375343] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:20,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:20,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:11:20,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022775276] [2024-10-11 06:11:20,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:20,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:11:20,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:20,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:11:20,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:11:20,210 INFO L87 Difference]: Start difference. First operand 337 states and 492 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:20,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:20,253 INFO L93 Difference]: Finished difference Result 607 states and 885 transitions. [2024-10-11 06:11:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:11:20,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-11 06:11:20,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:20,255 INFO L225 Difference]: With dead ends: 607 [2024-10-11 06:11:20,256 INFO L226 Difference]: Without dead ends: 369 [2024-10-11 06:11:20,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:11:20,257 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 12 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:20,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1536 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:11:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-10-11 06:11:20,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2024-10-11 06:11:20,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.4565217391304348) internal successors, (536), 368 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 536 transitions. [2024-10-11 06:11:20,268 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 536 transitions. Word has length 66 [2024-10-11 06:11:20,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:20,269 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 536 transitions. [2024-10-11 06:11:20,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:20,269 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 536 transitions. [2024-10-11 06:11:20,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 06:11:20,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:20,270 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:11:20,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 06:11:20,271 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:20,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:20,271 INFO L85 PathProgramCache]: Analyzing trace with hash -385998216, now seen corresponding path program 1 times [2024-10-11 06:11:20,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:20,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799393576] [2024-10-11 06:11:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:20,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:20,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:20,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799393576] [2024-10-11 06:11:20,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799393576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:20,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:20,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 06:11:20,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475482646] [2024-10-11 06:11:20,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:20,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 06:11:20,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:20,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 06:11:20,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:11:20,890 INFO L87 Difference]: Start difference. First operand 369 states and 536 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:21,138 INFO L93 Difference]: Finished difference Result 654 states and 949 transitions. [2024-10-11 06:11:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 06:11:21,138 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-11 06:11:21,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:21,140 INFO L225 Difference]: With dead ends: 654 [2024-10-11 06:11:21,140 INFO L226 Difference]: Without dead ends: 393 [2024-10-11 06:11:21,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-10-11 06:11:21,145 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 398 mSDsluCounter, 2980 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 3355 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:21,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 3355 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:11:21,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-10-11 06:11:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2024-10-11 06:11:21,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 1.4489795918367347) internal successors, (568), 392 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 568 transitions. [2024-10-11 06:11:21,162 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 568 transitions. Word has length 66 [2024-10-11 06:11:21,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:21,162 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 568 transitions. [2024-10-11 06:11:21,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:21,162 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 568 transitions. [2024-10-11 06:11:21,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-11 06:11:21,165 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:21,165 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:11:21,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 06:11:21,166 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:21,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:21,167 INFO L85 PathProgramCache]: Analyzing trace with hash -883228707, now seen corresponding path program 1 times [2024-10-11 06:11:21,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:21,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226689246] [2024-10-11 06:11:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:21,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:21,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:21,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226689246] [2024-10-11 06:11:21,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226689246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:21,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:21,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:11:21,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125126661] [2024-10-11 06:11:21,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:21,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:11:21,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:21,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:11:21,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:11:21,456 INFO L87 Difference]: Start difference. First operand 393 states and 568 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:21,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:21,881 INFO L93 Difference]: Finished difference Result 779 states and 1120 transitions. [2024-10-11 06:11:21,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:11:21,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-11 06:11:21,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:21,885 INFO L225 Difference]: With dead ends: 779 [2024-10-11 06:11:21,885 INFO L226 Difference]: Without dead ends: 479 [2024-10-11 06:11:21,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:11:21,886 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 729 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:21,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1330 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 06:11:21,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-10-11 06:11:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 367. [2024-10-11 06:11:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.4426229508196722) internal successors, (528), 366 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:21,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 528 transitions. [2024-10-11 06:11:21,900 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 528 transitions. Word has length 67 [2024-10-11 06:11:21,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:21,900 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 528 transitions. [2024-10-11 06:11:21,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:21,901 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 528 transitions. [2024-10-11 06:11:21,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-11 06:11:21,902 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:21,902 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:11:21,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 06:11:21,903 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:21,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:21,903 INFO L85 PathProgramCache]: Analyzing trace with hash -25157749, now seen corresponding path program 1 times [2024-10-11 06:11:21,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:21,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010320925] [2024-10-11 06:11:21,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:21,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:22,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:22,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010320925] [2024-10-11 06:11:22,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010320925] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:22,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:22,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 06:11:22,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885748633] [2024-10-11 06:11:22,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:22,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 06:11:22,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:22,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 06:11:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:11:22,414 INFO L87 Difference]: Start difference. First operand 367 states and 528 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:22,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:22,562 INFO L93 Difference]: Finished difference Result 661 states and 950 transitions. [2024-10-11 06:11:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 06:11:22,562 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-11 06:11:22,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:22,564 INFO L225 Difference]: With dead ends: 661 [2024-10-11 06:11:22,564 INFO L226 Difference]: Without dead ends: 379 [2024-10-11 06:11:22,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-11 06:11:22,566 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 399 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:22,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 2637 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:11:22,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-10-11 06:11:22,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2024-10-11 06:11:22,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.439153439153439) internal successors, (544), 378 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:22,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 544 transitions. [2024-10-11 06:11:22,574 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 544 transitions. Word has length 67 [2024-10-11 06:11:22,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:22,574 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 544 transitions. [2024-10-11 06:11:22,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:22,575 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 544 transitions. [2024-10-11 06:11:22,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-11 06:11:22,575 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:22,576 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:11:22,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 06:11:22,576 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:22,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:22,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1857040303, now seen corresponding path program 1 times [2024-10-11 06:11:22,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:22,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728877524] [2024-10-11 06:11:22,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:22,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:22,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:22,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728877524] [2024-10-11 06:11:22,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728877524] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:22,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:22,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:11:22,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991839054] [2024-10-11 06:11:22,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:22,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:11:22,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:11:22,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:11:22,868 INFO L87 Difference]: Start difference. First operand 379 states and 544 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:23,058 INFO L93 Difference]: Finished difference Result 737 states and 1056 transitions. [2024-10-11 06:11:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:11:23,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-10-11 06:11:23,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:23,060 INFO L225 Difference]: With dead ends: 737 [2024-10-11 06:11:23,061 INFO L226 Difference]: Without dead ends: 431 [2024-10-11 06:11:23,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:11:23,062 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 643 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:23,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1120 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 06:11:23,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-10-11 06:11:23,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 352. [2024-10-11 06:11:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.4415954415954415) internal successors, (506), 351 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:23,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 506 transitions. [2024-10-11 06:11:23,072 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 506 transitions. Word has length 68 [2024-10-11 06:11:23,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:23,072 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 506 transitions. [2024-10-11 06:11:23,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:23,073 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 506 transitions. [2024-10-11 06:11:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-11 06:11:23,076 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:23,076 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 06:11:23,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 06:11:23,078 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:23,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:23,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1674351988, now seen corresponding path program 1 times [2024-10-11 06:11:23,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:23,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197437191] [2024-10-11 06:11:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:23,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:24,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:24,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197437191] [2024-10-11 06:11:24,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197437191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:24,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:24,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:11:24,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706038030] [2024-10-11 06:11:24,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:24,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:11:24,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:24,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:11:24,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:11:24,976 INFO L87 Difference]: Start difference. First operand 352 states and 506 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:25,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:25,097 INFO L93 Difference]: Finished difference Result 982 states and 1420 transitions. [2024-10-11 06:11:25,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 06:11:25,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2024-10-11 06:11:25,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:25,102 INFO L225 Difference]: With dead ends: 982 [2024-10-11 06:11:25,102 INFO L226 Difference]: Without dead ends: 719 [2024-10-11 06:11:25,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-11 06:11:25,103 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 380 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:25,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 2466 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:11:25,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2024-10-11 06:11:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 548. [2024-10-11 06:11:25,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 1.453382084095064) internal successors, (795), 547 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:25,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 795 transitions. [2024-10-11 06:11:25,121 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 795 transitions. Word has length 165 [2024-10-11 06:11:25,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:25,122 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 795 transitions. [2024-10-11 06:11:25,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 795 transitions. [2024-10-11 06:11:25,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-11 06:11:25,124 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:25,124 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 06:11:25,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 06:11:25,125 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:25,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:25,125 INFO L85 PathProgramCache]: Analyzing trace with hash 576628613, now seen corresponding path program 1 times [2024-10-11 06:11:25,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:25,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466794651] [2024-10-11 06:11:25,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:25,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:26,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:26,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466794651] [2024-10-11 06:11:26,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466794651] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:26,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:26,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:11:26,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271647736] [2024-10-11 06:11:26,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:26,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:11:26,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:26,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:11:26,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:11:26,914 INFO L87 Difference]: Start difference. First operand 548 states and 795 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:27,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:27,041 INFO L93 Difference]: Finished difference Result 1718 states and 2503 transitions. [2024-10-11 06:11:27,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 06:11:27,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2024-10-11 06:11:27,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:27,047 INFO L225 Difference]: With dead ends: 1718 [2024-10-11 06:11:27,048 INFO L226 Difference]: Without dead ends: 1245 [2024-10-11 06:11:27,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-11 06:11:27,052 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 418 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:27,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 2562 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:11:27,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2024-10-11 06:11:27,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 834. [2024-10-11 06:11:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 833 states have (on average 1.4633853541416566) internal successors, (1219), 833 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1219 transitions. [2024-10-11 06:11:27,076 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1219 transitions. Word has length 166 [2024-10-11 06:11:27,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:27,077 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1219 transitions. [2024-10-11 06:11:27,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:27,077 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1219 transitions. [2024-10-11 06:11:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-11 06:11:27,080 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:27,080 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:11:27,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 06:11:27,081 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:27,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:27,082 INFO L85 PathProgramCache]: Analyzing trace with hash -216176914, now seen corresponding path program 1 times [2024-10-11 06:11:27,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:27,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578407176] [2024-10-11 06:11:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:27,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:29,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:29,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578407176] [2024-10-11 06:11:29,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578407176] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:29,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:29,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:11:29,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701945844] [2024-10-11 06:11:29,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:29,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:11:29,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:29,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:11:29,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:11:29,049 INFO L87 Difference]: Start difference. First operand 834 states and 1219 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:30,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:30,323 INFO L93 Difference]: Finished difference Result 2341 states and 3429 transitions. [2024-10-11 06:11:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 06:11:30,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2024-10-11 06:11:30,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:30,331 INFO L225 Difference]: With dead ends: 2341 [2024-10-11 06:11:30,332 INFO L226 Difference]: Without dead ends: 1574 [2024-10-11 06:11:30,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 06:11:30,334 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 704 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:30,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 2117 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-11 06:11:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2024-10-11 06:11:30,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1096. [2024-10-11 06:11:30,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 1095 states have (on average 1.469406392694064) internal successors, (1609), 1095 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1609 transitions. [2024-10-11 06:11:30,367 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1609 transitions. Word has length 166 [2024-10-11 06:11:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:30,368 INFO L471 AbstractCegarLoop]: Abstraction has 1096 states and 1609 transitions. [2024-10-11 06:11:30,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1609 transitions. [2024-10-11 06:11:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-11 06:11:30,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:30,373 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:11:30,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 06:11:30,373 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:30,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:30,374 INFO L85 PathProgramCache]: Analyzing trace with hash 448863657, now seen corresponding path program 1 times [2024-10-11 06:11:30,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:30,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872399986] [2024-10-11 06:11:30,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:30,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:32,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:32,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872399986] [2024-10-11 06:11:32,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872399986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:32,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:32,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:11:32,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136188750] [2024-10-11 06:11:32,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:32,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:11:32,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:32,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:11:32,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:11:32,044 INFO L87 Difference]: Start difference. First operand 1096 states and 1609 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:32,479 INFO L93 Difference]: Finished difference Result 2477 states and 3633 transitions. [2024-10-11 06:11:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 06:11:32,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-10-11 06:11:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:32,486 INFO L225 Difference]: With dead ends: 2477 [2024-10-11 06:11:32,486 INFO L226 Difference]: Without dead ends: 1448 [2024-10-11 06:11:32,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-11 06:11:32,491 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 384 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:32,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 2756 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 06:11:32,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2024-10-11 06:11:32,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1047. [2024-10-11 06:11:32,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 1.4694072657743786) internal successors, (1537), 1046 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:32,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1537 transitions. [2024-10-11 06:11:32,518 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1537 transitions. Word has length 167 [2024-10-11 06:11:32,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:32,519 INFO L471 AbstractCegarLoop]: Abstraction has 1047 states and 1537 transitions. [2024-10-11 06:11:32,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:32,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1537 transitions. [2024-10-11 06:11:32,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-11 06:11:32,522 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:32,522 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 06:11:32,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 06:11:32,523 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:32,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:32,523 INFO L85 PathProgramCache]: Analyzing trace with hash -907081323, now seen corresponding path program 1 times [2024-10-11 06:11:32,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:32,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810261870] [2024-10-11 06:11:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:32,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:34,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:34,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810261870] [2024-10-11 06:11:34,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810261870] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:34,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:34,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:11:34,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72063798] [2024-10-11 06:11:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:34,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:11:34,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:34,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:11:34,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:11:34,151 INFO L87 Difference]: Start difference. First operand 1047 states and 1537 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:35,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:35,476 INFO L93 Difference]: Finished difference Result 3223 states and 4739 transitions. [2024-10-11 06:11:35,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 06:11:35,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-10-11 06:11:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:35,485 INFO L225 Difference]: With dead ends: 3223 [2024-10-11 06:11:35,486 INFO L226 Difference]: Without dead ends: 2241 [2024-10-11 06:11:35,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 06:11:35,491 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 730 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:35,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 2177 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-11 06:11:35,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2024-10-11 06:11:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 1436. [2024-10-11 06:11:35,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 1.473170731707317) internal successors, (2114), 1435 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2114 transitions. [2024-10-11 06:11:35,542 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2114 transitions. Word has length 167 [2024-10-11 06:11:35,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:35,543 INFO L471 AbstractCegarLoop]: Abstraction has 1436 states and 2114 transitions. [2024-10-11 06:11:35,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:35,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2114 transitions. [2024-10-11 06:11:35,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-11 06:11:35,547 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:35,547 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 06:11:35,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 06:11:35,548 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:35,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:35,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2070619825, now seen corresponding path program 1 times [2024-10-11 06:11:35,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:35,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714658913] [2024-10-11 06:11:35,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:35,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:38,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:38,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714658913] [2024-10-11 06:11:38,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714658913] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:38,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:38,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:11:38,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670296185] [2024-10-11 06:11:38,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:38,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:11:38,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:38,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:11:38,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:11:38,484 INFO L87 Difference]: Start difference. First operand 1436 states and 2114 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:38,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:38,749 INFO L93 Difference]: Finished difference Result 2960 states and 4356 transitions. [2024-10-11 06:11:38,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:11:38,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-10-11 06:11:38,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:38,756 INFO L225 Difference]: With dead ends: 2960 [2024-10-11 06:11:38,757 INFO L226 Difference]: Without dead ends: 1589 [2024-10-11 06:11:38,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:11:38,760 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 354 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:38,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1233 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 06:11:38,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2024-10-11 06:11:38,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1490. [2024-10-11 06:11:38,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 1.468099395567495) internal successors, (2186), 1489 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:38,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2186 transitions. [2024-10-11 06:11:38,798 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2186 transitions. Word has length 167 [2024-10-11 06:11:38,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:38,798 INFO L471 AbstractCegarLoop]: Abstraction has 1490 states and 2186 transitions. [2024-10-11 06:11:38,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:38,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2186 transitions. [2024-10-11 06:11:38,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-11 06:11:38,803 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:38,803 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 06:11:38,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 06:11:38,804 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:38,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:38,804 INFO L85 PathProgramCache]: Analyzing trace with hash 308006826, now seen corresponding path program 1 times [2024-10-11 06:11:38,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:38,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917690219] [2024-10-11 06:11:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:38,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:42,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:42,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917690219] [2024-10-11 06:11:42,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917690219] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:42,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:42,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:11:42,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305261107] [2024-10-11 06:11:42,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:42,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:11:42,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:42,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:11:42,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:11:42,125 INFO L87 Difference]: Start difference. First operand 1490 states and 2186 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:42,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:42,741 INFO L93 Difference]: Finished difference Result 4124 states and 6050 transitions. [2024-10-11 06:11:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:11:42,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2024-10-11 06:11:42,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:42,751 INFO L225 Difference]: With dead ends: 4124 [2024-10-11 06:11:42,751 INFO L226 Difference]: Without dead ends: 2483 [2024-10-11 06:11:42,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 06:11:42,756 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 1404 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:42,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 1313 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 06:11:42,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2024-10-11 06:11:42,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 1526. [2024-10-11 06:11:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 1.4609836065573771) internal successors, (2228), 1525 states have internal predecessors, (2228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:42,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2228 transitions. [2024-10-11 06:11:42,809 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2228 transitions. Word has length 168 [2024-10-11 06:11:42,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:42,810 INFO L471 AbstractCegarLoop]: Abstraction has 1526 states and 2228 transitions. [2024-10-11 06:11:42,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:42,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2228 transitions. [2024-10-11 06:11:42,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-11 06:11:42,815 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:42,815 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 06:11:42,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 06:11:42,815 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:42,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:42,816 INFO L85 PathProgramCache]: Analyzing trace with hash -703106929, now seen corresponding path program 1 times [2024-10-11 06:11:42,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:42,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746362120] [2024-10-11 06:11:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:42,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:45,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:45,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746362120] [2024-10-11 06:11:45,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746362120] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:45,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:45,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:11:45,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103846953] [2024-10-11 06:11:45,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:45,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:11:45,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:45,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:11:45,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:11:45,422 INFO L87 Difference]: Start difference. First operand 1526 states and 2228 transitions. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:46,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:46,061 INFO L93 Difference]: Finished difference Result 4042 states and 5929 transitions. [2024-10-11 06:11:46,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:11:46,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2024-10-11 06:11:46,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:46,071 INFO L225 Difference]: With dead ends: 4042 [2024-10-11 06:11:46,072 INFO L226 Difference]: Without dead ends: 2617 [2024-10-11 06:11:46,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:11:46,075 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 796 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:46,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1125 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 06:11:46,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2024-10-11 06:11:46,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 1538. [2024-10-11 06:11:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 1.4593363695510735) internal successors, (2243), 1537 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2243 transitions. [2024-10-11 06:11:46,115 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2243 transitions. Word has length 169 [2024-10-11 06:11:46,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:46,115 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 2243 transitions. [2024-10-11 06:11:46,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2243 transitions. [2024-10-11 06:11:46,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-11 06:11:46,119 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:46,119 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 06:11:46,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 06:11:46,119 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:46,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:46,120 INFO L85 PathProgramCache]: Analyzing trace with hash 962613154, now seen corresponding path program 1 times [2024-10-11 06:11:46,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:46,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571131153] [2024-10-11 06:11:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:46,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:48,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:48,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571131153] [2024-10-11 06:11:48,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571131153] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:48,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:48,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:11:48,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998775220] [2024-10-11 06:11:48,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:48,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:11:48,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:11:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:11:48,375 INFO L87 Difference]: Start difference. First operand 1538 states and 2243 transitions. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:48,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:48,950 INFO L93 Difference]: Finished difference Result 4150 states and 6088 transitions. [2024-10-11 06:11:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:11:48,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2024-10-11 06:11:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:48,963 INFO L225 Difference]: With dead ends: 4150 [2024-10-11 06:11:48,963 INFO L226 Difference]: Without dead ends: 2725 [2024-10-11 06:11:48,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:11:48,968 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 1026 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:48,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 933 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 06:11:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2024-10-11 06:11:49,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 1574. [2024-10-11 06:11:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1573 states have (on average 1.4545454545454546) internal successors, (2288), 1573 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:49,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2288 transitions. [2024-10-11 06:11:49,033 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2288 transitions. Word has length 170 [2024-10-11 06:11:49,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:49,033 INFO L471 AbstractCegarLoop]: Abstraction has 1574 states and 2288 transitions. [2024-10-11 06:11:49,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:49,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2288 transitions. [2024-10-11 06:11:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 06:11:49,039 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:49,040 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 06:11:49,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 06:11:49,040 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:49,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:49,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1660876383, now seen corresponding path program 1 times [2024-10-11 06:11:49,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:49,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276880684] [2024-10-11 06:11:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:49,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:50,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276880684] [2024-10-11 06:11:50,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276880684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:50,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:50,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:11:50,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23983279] [2024-10-11 06:11:50,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:50,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 06:11:50,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:50,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 06:11:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:11:50,980 INFO L87 Difference]: Start difference. First operand 1574 states and 2288 transitions. Second operand has 8 states, 8 states have (on average 21.375) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:51,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:51,579 INFO L93 Difference]: Finished difference Result 3358 states and 4891 transitions. [2024-10-11 06:11:51,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 06:11:51,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2024-10-11 06:11:51,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:51,587 INFO L225 Difference]: With dead ends: 3358 [2024-10-11 06:11:51,588 INFO L226 Difference]: Without dead ends: 1933 [2024-10-11 06:11:51,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-10-11 06:11:51,592 INFO L432 NwaCegarLoop]: 352 mSDtfsCounter, 612 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:51,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1424 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 06:11:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2024-10-11 06:11:51,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1709. [2024-10-11 06:11:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1708 states have (on average 1.4502341920374706) internal successors, (2477), 1708 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:51,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2477 transitions. [2024-10-11 06:11:51,635 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2477 transitions. Word has length 171 [2024-10-11 06:11:51,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:51,635 INFO L471 AbstractCegarLoop]: Abstraction has 1709 states and 2477 transitions. [2024-10-11 06:11:51,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:51,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2477 transitions. [2024-10-11 06:11:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 06:11:51,640 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:51,640 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 06:11:51,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 06:11:51,640 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:51,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:51,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1953777261, now seen corresponding path program 1 times [2024-10-11 06:11:51,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:51,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051826138] [2024-10-11 06:11:51,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:51,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:54,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:54,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051826138] [2024-10-11 06:11:54,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051826138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:54,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:54,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:11:54,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518146366] [2024-10-11 06:11:54,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:54,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:11:54,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:54,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:11:54,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:11:54,374 INFO L87 Difference]: Start difference. First operand 1709 states and 2477 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:54,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:54,937 INFO L93 Difference]: Finished difference Result 4107 states and 5982 transitions. [2024-10-11 06:11:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:11:54,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2024-10-11 06:11:54,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:54,957 INFO L225 Difference]: With dead ends: 4107 [2024-10-11 06:11:54,957 INFO L226 Difference]: Without dead ends: 2501 [2024-10-11 06:11:54,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:11:54,961 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 738 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:54,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 630 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 06:11:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2501 states. [2024-10-11 06:11:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2501 to 1709. [2024-10-11 06:11:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1708 states have (on average 1.449648711943794) internal successors, (2476), 1708 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2476 transitions. [2024-10-11 06:11:55,018 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2476 transitions. Word has length 171 [2024-10-11 06:11:55,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:55,018 INFO L471 AbstractCegarLoop]: Abstraction has 1709 states and 2476 transitions. [2024-10-11 06:11:55,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2476 transitions. [2024-10-11 06:11:55,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-11 06:11:55,023 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:55,024 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 06:11:55,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 06:11:55,024 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:55,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:55,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2102786389, now seen corresponding path program 1 times [2024-10-11 06:11:55,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:55,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147302953] [2024-10-11 06:11:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:55,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:11:57,365 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:11:57,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:11:57,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147302953] [2024-10-11 06:11:57,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147302953] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:11:57,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:11:57,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:11:57,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081858422] [2024-10-11 06:11:57,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:11:57,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:11:57,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:11:57,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:11:57,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:11:57,367 INFO L87 Difference]: Start difference. First operand 1709 states and 2476 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:57,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:11:57,982 INFO L93 Difference]: Finished difference Result 4199 states and 6122 transitions. [2024-10-11 06:11:57,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:11:57,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2024-10-11 06:11:57,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:11:57,990 INFO L225 Difference]: With dead ends: 4199 [2024-10-11 06:11:57,990 INFO L226 Difference]: Without dead ends: 2609 [2024-10-11 06:11:57,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:11:57,995 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 764 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 06:11:57,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 631 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 06:11:57,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2609 states. [2024-10-11 06:11:58,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2609 to 1709. [2024-10-11 06:11:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1708 states have (on average 1.4478922716627636) internal successors, (2473), 1708 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:58,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2473 transitions. [2024-10-11 06:11:58,039 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2473 transitions. Word has length 172 [2024-10-11 06:11:58,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:11:58,040 INFO L471 AbstractCegarLoop]: Abstraction has 1709 states and 2473 transitions. [2024-10-11 06:11:58,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:11:58,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2473 transitions. [2024-10-11 06:11:58,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-11 06:11:58,045 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:11:58,045 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 06:11:58,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-11 06:11:58,045 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:11:58,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:11:58,046 INFO L85 PathProgramCache]: Analyzing trace with hash 937842769, now seen corresponding path program 1 times [2024-10-11 06:11:58,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:11:58,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565611853] [2024-10-11 06:11:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:11:58,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:11:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:00,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:00,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565611853] [2024-10-11 06:12:00,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565611853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:00,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:00,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:00,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214745156] [2024-10-11 06:12:00,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:00,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:12:00,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:00,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:12:00,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:00,343 INFO L87 Difference]: Start difference. First operand 1709 states and 2473 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:00,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:00,954 INFO L93 Difference]: Finished difference Result 4259 states and 6218 transitions. [2024-10-11 06:12:00,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:12:00,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2024-10-11 06:12:00,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:00,968 INFO L225 Difference]: With dead ends: 4259 [2024-10-11 06:12:00,969 INFO L226 Difference]: Without dead ends: 2717 [2024-10-11 06:12:00,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:00,973 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 792 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:00,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 631 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 06:12:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2024-10-11 06:12:01,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 1709. [2024-10-11 06:12:01,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1708 states have (on average 1.4426229508196722) internal successors, (2464), 1708 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:01,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2464 transitions. [2024-10-11 06:12:01,018 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2464 transitions. Word has length 173 [2024-10-11 06:12:01,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:01,018 INFO L471 AbstractCegarLoop]: Abstraction has 1709 states and 2464 transitions. [2024-10-11 06:12:01,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:01,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2464 transitions. [2024-10-11 06:12:01,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-10-11 06:12:01,023 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:01,023 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 06:12:01,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 06:12:01,023 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:01,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:01,024 INFO L85 PathProgramCache]: Analyzing trace with hash 478203923, now seen corresponding path program 1 times [2024-10-11 06:12:01,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:01,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331783662] [2024-10-11 06:12:01,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:01,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:06,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:06,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331783662] [2024-10-11 06:12:06,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331783662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:06,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:06,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:12:06,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172478447] [2024-10-11 06:12:06,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:06,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:12:06,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:06,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:12:06,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:12:06,408 INFO L87 Difference]: Start difference. First operand 1709 states and 2464 transitions. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:06,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:06,717 INFO L93 Difference]: Finished difference Result 3266 states and 4745 transitions. [2024-10-11 06:12:06,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:12:06,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2024-10-11 06:12:06,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:06,727 INFO L225 Difference]: With dead ends: 3266 [2024-10-11 06:12:06,727 INFO L226 Difference]: Without dead ends: 1721 [2024-10-11 06:12:06,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:12:06,732 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 593 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:06,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1438 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 06:12:06,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-10-11 06:12:06,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1589. [2024-10-11 06:12:06,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1588 states have (on average 1.4534005037783375) internal successors, (2308), 1588 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:06,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2308 transitions. [2024-10-11 06:12:06,767 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2308 transitions. Word has length 174 [2024-10-11 06:12:06,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:06,768 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2308 transitions. [2024-10-11 06:12:06,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:06,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2308 transitions. [2024-10-11 06:12:06,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-10-11 06:12:06,771 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:06,771 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:06,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 06:12:06,771 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:06,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:06,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1272182552, now seen corresponding path program 1 times [2024-10-11 06:12:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:06,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631308104] [2024-10-11 06:12:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:06,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:11,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:11,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631308104] [2024-10-11 06:12:11,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631308104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:11,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:11,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:12:11,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516149087] [2024-10-11 06:12:11,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:11,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:12:11,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:11,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:12:11,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:12:11,732 INFO L87 Difference]: Start difference. First operand 1589 states and 2308 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)